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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-30919

Freitas, A; Steffen, F D; Tajuddin, N; Wyler, D (2009). Late energy injection and cosmological constraints in axino dark matter scenarios. Physics Letters B, 682(2):193-199.

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Abstract

Taking into account effects of late energy injection, we examine big bang nucleosynthesis (BBN) constraints on axino dark matter scenarios with long-lived charged sleptons. We calculate 4-body slepton decays into the axino, a lepton, and a quark–antiquark pair since they govern late hadronic energy injection and associated BBN constraints. For supersymmetric hadronic axion models, we present the obtained hadronic BBN constraints and show that they can be more restrictive than the ones associated with catalyzed BBN via slepton-bound-state formation. From the BBN constraints on hadronic and electromagnetic energy release, we find new upper limits on the Peccei–Quinn scale.

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Theoretical Physics
DDC:530 Physics
Language:English
Date:2009
Deposited On:21 Feb 2010 12:31
Last Modified:27 Nov 2013 23:29
Publisher:Elsevier
ISSN:0370-2693
Publisher DOI:10.1016/j.physletb.2009.10.094
Related URLs:http://arxiv.org/abs/0909.3293
Citations:Web of Science®. Times Cited: 10
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